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2026-05-19 - 06:40
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Data to construct the above plot have been generated using the RT test utility cyclictest.
Unexpectedly long latencies may be caused by SMIs
Total number of samples: 100 million
Resolution of latency scale: normal
Duration: 5 hours, 33 minutes, lowest P state: performance
Characteristics of the 20 highest latencies:
System rack6slot0.osadl.org (updated Tue May 19, 2026 01:02:03)
Delayed (victim)Switcher (culprit)TimestampCPU
PIDPrioTotal
latency
(µs)
T*(,W**)
latency
(µs)
CmdPIDPrioCmd
3691999200176,15cyclictest0-21swapper/300:35:1523
3691999200176,15cyclictest0-21swapper/300:35:1423
3696099195147,40cyclictest0-21swapper/3821:30:0332
3696099195147,40cyclictest0-21swapper/3821:30:0332
3696099195147,40cyclictest0-21swapper/3821:30:0232
3693899189168,7cyclictest4408-21CPU11
3693899189168,7cyclictest4408-21CPU11
3691999188168,9cyclictest0-21swapper/300:27:0023
3691999188168,9cyclictest0-21swapper/300:26:5923
3691999188168,9cyclictest0-21swapper/300:26:5923
3691999187159,14cyclictest0-21swapper/321:56:0823
3691999187159,14cyclictest0-21swapper/321:56:0723
3691999186169,12cyclictest0-21swapper/300:33:1723
3691999186169,12cyclictest0-21swapper/300:33:1623
3694999185180,3cyclictest38856-21kworker/u81:5+events_unbound23:07:4121
3694999185180,3cyclictest38856-21kworker/u81:5+events_unbound23:07:4121
3692399185161,8cyclictest0-21swapper/721:55:0037
3692399185161,8cyclictest0-21swapper/721:55:0037
3693899184173,9cyclictest0-21swapper/1921:56:1911
3693899184173,9cyclictest0-21swapper/1921:56:1811
*Timer  **Wakeup  (latency=timer+wakeup+contextswitch)

 

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